Grasp tiny components on circuit boards and other electronic systems in order to test, identify, and troubleshoot them. These testers perform a complete analysis of components by measuring inductance, capacitance, resistance, dissipation factor, quality factor, impedance, and equivalent series resistance. They automatically determine the component model and test parameters, but you can manually select the parameters and test signal levels too. An LED screen displays the component type and measurements. These testers also check if diode voltage is open or shorted, if components are in the best-performance tolerance range so you can sort them, and if there’s continuity in the resistance readings or a shorted conductor. All include a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. They run on a rechargeable battery, so you aren’t tethered by a power cord.

These testers have tweezer-style pointed tips for precision control. Made of stainless steel, the tips withstand wear and high temperatures. They’re also gold plated to conduct electricity and resist corrosion and tarnishing, which hurt conductivity.